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Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C
Chen, Hao; He, Shan; Cao, Xingzhong; Zhang, Shitong; Xu, Ming; Pu, Min; Su, Dangsheng; Wei, Min; Evans, David G.; Duan, Xue; He, S; Wei, M (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-07-12
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
Volume28Issue:13Pages:4751-4761
AbstractFor catalytic processes involving multiple reaction pathways such as the ethanol steam reforming (ESR), tailoring the active site structure of catalysts to achieve the desired catalytic selectivity is of vital importance and remains a challenge. Here, we report a heterogeneous Ru-Ni catalyst by anchoring Ru clusters onto the defect sites of Ni nanoparticles. The resulting strained Ru-Ni interface shows a high activity toward the C-C bond cleavage that is essentially required for hydrogen production via ESR. The C-O bond rupture in the side reaction (methanation) is significantly inhibited. This results in an extremely high H2 yield of 4.2 molH2/molEtOH at 350 degrees C, superior to the previously reported ESR catalysts working at medium-low temperature (300-500 degrees C). An experimental-computational combination study verifies that the conversion of Ni surface defects to the Ru-Ni interface plays a decisive role in the remarkably improved H2 yield. This work demonstrates an effective strategy to largely enhance the bond-breaking selectivity via tuning the active site structure at the catalyst surface/interface.
description.department[chen, hao ; he, shan ; zhang, shitong ; xu, ming ; pu, min ; wei, min ; evans, david g. ; duan, xue] beijing univ chem technol, state key lab chem resource engn, beijing 100029, peoples r china ; [cao, xingzhong] chinese acad sci, inst high energy phys, beijing 100049, peoples r china ; [su, dangsheng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
Subject AreaChemistry ; Materials Science
Funding Organization973 Program [2014CB932104]; National Natural Science Foundation of China
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75794
Collection中国科学院金属研究所
Corresponding AuthorHe, S; Wei, M (reprint author), Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Chen, Hao,He, Shan,Cao, Xingzhong,et al. Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C[J]. CHEMISTRY OF MATERIALS,2016,28(13):4751-4761.
APA Chen, Hao.,He, Shan.,Cao, Xingzhong.,Zhang, Shitong.,Xu, Ming.,...&Su, DS .(2016).Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C.CHEMISTRY OF MATERIALS,28(13),4751-4761.
MLA Chen, Hao,et al."Ru-Cluster-Modified Ni Surface Defects toward Selective Bond Breaking between C-O and C-C".CHEMISTRY OF MATERIALS 28.13(2016):4751-4761.
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